Table 3.
The Correlation between Plasma N‐Terminal pro‐B‐Type Natriuretic Peptide, Ventricular Premature Contractions, and Heart Rate Variability Parameters in Healthy Smoker Subjects
| Variables | NT‐pro‐BNP | VPCs |
|---|---|---|
| SDNN | r =−0.451, P < 0.0001 | r =−0.387, P < 0.0001 |
| SDANN | r =−0.523, P < 0.0001 | r =−0.416, P < 0.0001 |
| RMSSD | r =−0.229, P < 0.0001 | r =−0.112, P = 0.2 |
| LF day | r = 0.572, P < 0.0001 | r = 0.447, P < 0.0001 |
| LF night | r = 0.246, P < 0.0001 | r = 0.188, P < 0.0001 |
| LF 24 hours | r = 0.568, P < 0.0001 | r = 0.465, P < 0.0001 |
| HF day | r =−0.339, P<0.0001 | r =−0.162, P = 0.04 |
| HF night | r =−0.167, P = 0.04 | r =−0.092, P = 0.2 |
| HF 24 hours | r =−0.268, P = 0.005 | r =−0.131, P = 0.1 |
| LF/HF day | r = 0.623, P < 0.0001 | r = 0.394, P < 0.0001 |
| LF/HF night | r = 0.542, P < 0.0001 | r = 0.349, P<0.0001 |
| LF/HF 24 hours | r = 0.640, P < 0.0001 | r = 0.443, P < 0.0001 |
SDNN = standard deviation of all NN intervals; SDANN = standard deviation of the 5‐minute mean RR intervals; RMSSD = root mean square of successive differences; LF = low frequency; HF = high frequency; VPCs = ventricular premature contractions; NT‐pro‐BNP = N‐Terminal pro‐B‐type natriuretic peptide (pg/mL).